After initiating CA migration, connection errors may occur
NetBackup now supports certificate authorities with the following key strengths: 2048 bits, 4096 bits, 8192 bits, and 16384 bits. After NetBackup 9.0 installation or upgrade, by default a new root CA with 2048-bits key strength is deployed.
If you are connected to the NetBackup web UI during NetBackup CA migration, you should again sign in to the web UI for successful communication.